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* add new function pa_channel_map_parse()

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* increase PA_CHANNEL_MAP_SNPRINT_MAX
* add "top" channel positions


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@799 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2006-04-26 14:33:45 +00:00
parent 31ad62fa4d
commit 195e96912f
2 changed files with 122 additions and 37 deletions
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144
src/polyp/channelmap.c
View file

@ -28,8 +28,57 @@
#include <stdio.h>
#include <string.h>
#include <polypcore/util.h>
#include <polypcore/xmalloc.h>
#include "channelmap.h"
const char *const table[] = {
[PA_CHANNEL_POSITION_MONO] = "mono",
[PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center",
[PA_CHANNEL_POSITION_FRONT_LEFT] = "front-left",
[PA_CHANNEL_POSITION_FRONT_RIGHT] = "front-right",
[PA_CHANNEL_POSITION_REAR_CENTER] = "rear-center",
[PA_CHANNEL_POSITION_REAR_LEFT] = "rear-left",
[PA_CHANNEL_POSITION_REAR_RIGHT] = "rear-right",
[PA_CHANNEL_POSITION_LFE] = "lfe",
[PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = "front-left-of-center",
[PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = "front-right-of-center",
[PA_CHANNEL_POSITION_SIDE_LEFT] = "side-left",
[PA_CHANNEL_POSITION_SIDE_RIGHT] = "side-right",
[PA_CHANNEL_POSITION_AUX0] = "aux0",
[PA_CHANNEL_POSITION_AUX1] = "aux1",
[PA_CHANNEL_POSITION_AUX2] = "aux2",
[PA_CHANNEL_POSITION_AUX3] = "aux3",
[PA_CHANNEL_POSITION_AUX4] = "aux4",
[PA_CHANNEL_POSITION_AUX5] = "aux5",
[PA_CHANNEL_POSITION_AUX6] = "aux6",
[PA_CHANNEL_POSITION_AUX7] = "aux7",
[PA_CHANNEL_POSITION_AUX8] = "aux8",
[PA_CHANNEL_POSITION_AUX9] = "aux9",
[PA_CHANNEL_POSITION_AUX10] = "aux10",
[PA_CHANNEL_POSITION_AUX11] = "aux11",
[PA_CHANNEL_POSITION_AUX12] = "aux12",
[PA_CHANNEL_POSITION_AUX13] = "aux13",
[PA_CHANNEL_POSITION_AUX14] = "aux14",
[PA_CHANNEL_POSITION_AUX15] = "aux15",
[PA_CHANNEL_POSITION_TOP_CENTER] = "top-center",
[PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = "top-front-left",
[PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = "top-front-right",
[PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = "top-front-center",
[PA_CHANNEL_POSITION_TOP_REAR_LEFT] = "top-rear-left",
[PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = "top-rear-right",
[PA_CHANNEL_POSITION_TOP_REAR_CENTER] = "top-rear-center"
};
pa_channel_map* pa_channel_map_init(pa_channel_map *m) {
unsigned c;
assert(m);
@ -117,41 +166,9 @@ pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels) {
}
}
const char* pa_channel_position_to_string(pa_channel_position_t pos) {
const char *const table[] = {
[PA_CHANNEL_POSITION_MONO] = "mono",
[PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center",
[PA_CHANNEL_POSITION_FRONT_LEFT] = "front-left",
[PA_CHANNEL_POSITION_FRONT_RIGHT] = "front-right",
[PA_CHANNEL_POSITION_REAR_CENTER] = "rear-center",
[PA_CHANNEL_POSITION_REAR_LEFT] = "rear-left",
[PA_CHANNEL_POSITION_REAR_RIGHT] = "rear-right",
[PA_CHANNEL_POSITION_LFE] = "lfe",
[PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = "front-left-of-center",
[PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = "front-right-of-center",
[PA_CHANNEL_POSITION_SIDE_LEFT] = "side-left",
[PA_CHANNEL_POSITION_SIDE_RIGHT] = "side-right",
[PA_CHANNEL_POSITION_AUX1] = "aux1",
[PA_CHANNEL_POSITION_AUX2] = "aux2",
[PA_CHANNEL_POSITION_AUX3] = "aux3",
[PA_CHANNEL_POSITION_AUX4] = "aux4",
[PA_CHANNEL_POSITION_AUX5] = "aux5",
[PA_CHANNEL_POSITION_AUX6] = "aux6",
[PA_CHANNEL_POSITION_AUX7] = "aux7",
[PA_CHANNEL_POSITION_AUX8] = "aux8",
[PA_CHANNEL_POSITION_AUX9] = "aux9",
[PA_CHANNEL_POSITION_AUX10] = "aux10",
[PA_CHANNEL_POSITION_AUX11] = "aux11",
[PA_CHANNEL_POSITION_AUX12] = "aux12"
};
if (pos < 0 || pos >= PA_CHANNEL_POSITION_MAX)
return NULL;
@ -186,9 +203,8 @@ char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
*(e = s) = 0;
for (channel = 0; channel < map->channels && l > 1; channel++) {
l -= snprintf(e, l, "%s%u:%s",
first ? "" : " ",
channel,
l -= snprintf(e, l, "%s%s",
first ? "" : ",",
pa_channel_position_to_string(map->map[channel]));
e = strchr(e, 0);
@ -198,6 +214,61 @@ char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
return s;
}
pa_channel_map *pa_channel_map_parse(pa_channel_map *map, const char *s) {
const char *state;
char *p;
assert(map);
assert(s);
memset(map, 0, sizeof(pa_channel_map));
if (strcmp(s, "stereo") == 0) {
map->channels = 2;
map->map[0] = PA_CHANNEL_POSITION_LEFT;
map->map[1] = PA_CHANNEL_POSITION_RIGHT;
return map;
}
state = NULL;
map->channels = 0;
while ((p = pa_split(s, ",", &state))) {
/* Some special aliases */
if (strcmp(p, "left") == 0)
map->map[map->channels++] = PA_CHANNEL_POSITION_LEFT;
else if (strcmp(p, "right") == 0)
map->map[map->channels++] = PA_CHANNEL_POSITION_RIGHT;
else if (strcmp(p, "center") == 0)
map->map[map->channels++] = PA_CHANNEL_POSITION_CENTER;
else if (strcmp(p, "subwoofer") == 0)
map->map[map->channels++] = PA_CHANNEL_POSITION_SUBWOOFER;
else {
pa_channel_position_t i;
for (i = 0; i < PA_CHANNEL_POSITION_MAX; i++)
if (strcmp(p, table[i]) == 0) {
map->map[map->channels++] = i;
break;
}
if (i >= PA_CHANNEL_POSITION_MAX) {
pa_xfree(p);
return NULL;
}
}
pa_xfree(p);
}
if (!map->channels)
return NULL;
return map;
}
int pa_channel_map_valid(const pa_channel_map *map) {
unsigned c;
@ -212,3 +283,4 @@ int pa_channel_map_valid(const pa_channel_map *map) {
return 1;
}